Change from a 32-bit version to a 64-bit version or vice versa. Activate Windows. Fix Bluetooth problems in Windows. Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.

Install Microsoft 365 2019 or 2016 on a PC. Remember a one-time purchase version of Microsoft 365 is licensed for one install only. Depending on your browser, select Open file (in Edge or Internet Explorer), Setup (in Chrome), or Save File (in Firefox).

If your purchase of Office or Microsoft 365 came with a product key, you enter your product key on one of the websites listed below for your product. After you enter your key, you can download and install Office, or you can renew your Microsoft 365 subscription. Tip: Get tech expertise with Business Assist.

You can directly install add-ins from this page or select More Add-ins to explore. In the Office Add-ins dialog, select My Add-ins tab. Select an add-in you want to view the details for and right-click to select Add-in details option. Click a heading below for more information .

Sign in to SharePoint. SharePoint is a browser-based app that you connect to through your web browser, like so: Go to office.com, and sign in to your work or school account. In the upper left corner of the window, select the app launcher > All apps > SharePoint.

SharePoint にサインインする. SharePointは、次のように、Web ブラウザーを介して接続するブラウザー ベースのアプリです。. [office.com] に移動し、職場または学校アカウントにサインインします。. ウィンドウの左上隅で、 [ すべての アプリ] > > アプリ起動ツール ...

Learn how to upgrade from Windows 10 Home to Windows 10 Pro or Windows 11 Home to Windows 11 Pro, including how to use a valid product key or the Microsoft Store.

Press the Xbox button on your controller to open the guide, and then go to Profile & system > Settings > Account > Subscriptions. Select the subscription that you want to manage. From here, you can view your plan, expiration date, billing history, subscription status, and change how you pay.

Contact us. Sign in so we can get you the right help and support. Select the product you need help with. We'll show you self-help options first. Additional help is available if you need it, including live chat with a Microsoft specialist. Microsoft 365. Office. Windows. Xbox. Surface devices. Copilot. Dynamics 365. Intune. Azure. Server products.

If you plan to exchange digitally-signed documents together with other people, and you want the recipients of your documents to be able to verify the authenticity of your digital signature, you can obtain a digital certificate from a reputable third-party certificate authority (CA).